[China Network] Update available-products.mdx (#25951)

Pages CANNOT work with a Custom Domain

---------

Co-authored-by: Pedro Sousa <[email protected]>

Author: benedict-notbot

src/content/docs/china-network/reference/available-products.mdx

@@ -41,7 +41,7 @@ The following products and features are available on the Cloudflare China Networ
 | [Tail Workers](/workers/observability/logs/tail-workers/)                 | Receives information about the execution of other Workers.                                                                                         |
 | [Version metadata](/workers/runtime-apis/bindings/version-metadata/)      | Access metadata associated with a version from inside the Workers runtime.                                                                         |
 | [Workers for Platforms](/cloudflare-for-platforms/workers-for-platforms/) | Deploy custom code on behalf of your users or let your users directly deploy their own code to your platform, managing infrastructure.             |
-| [Pages](/pages/)                                                          | Deploy dynamic front-end applications in record time.                                                                                              |
+| [Pages](/pages/)                                                          | Deploy dynamic front-end applications in record time. Custom Domains are not supported.                                                                                        |
 
 [^1]: [Turnstile](/turnstile/) is not available within Mainland China.
 [^2]: R2 buckets cannot be created within Mainland China and [custom domains](/r2/buckets/public-buckets/#add-your-domain-to-cloudflare) are not supported within Mainland China. However, R2 can be extended into Mainland China through [Global Acceleration](/china-network/concepts/global-acceleration/).
@@ -63,4 +63,4 @@ The following products and features are available on the Cloudflare China Networ
 | [Instant Logs](/logs/instant-logs/) | Live Tail your Cloudflare HTTP logs in the Cloudflare dashboard. |
 | [Logpush](/logs/logpush/)           | Push your Cloudflare HTTP logs to a storage service.             |
 
-For more details or specific product features, refer to the [FAQ](/china-network/faq/) page or contact your account team.
+For more details or specific product features, refer to the [FAQ](/china-network/faq/) page or contact your account team.